Profile Number 41

Laboratory number:	0969	Profile Description
Site number:	487	A_ll	0 - 4 cm	Very dark brown (10YR 2/2) organic clay loam; weak very fine (5 mm) subangular blocky structure; rough-ped fabric; slightly hard when dry; abundant roots; pH 5.5; abrupt boundary
Classification:	Northcote (1979) - Gn3.93 Stace et al. (1972) – Wiesenboden	A_l2	4 - 12 cm	Very dark grey (10YR 3/1) loamy clay; weak fine (10 mm) subangular blocky structure; rough-ped fabric; hard when dry; abundant roots; pH 6.0; clear boundary
Location:	Sale 8321, grid ref. 365908 4 km SE of Meerlieu, between Lakes Wellington and Victoria	B₂₁	12 - 25 cm	Very dark greyish brown (10YR 3/2) medium clay; moderate fine (10 mm) angular blocky structure; rough-ped fabric; very firm when moist; common faint brown mottles (5 - 15 mm); abundant roots; pH 6.5; clear boundary
Land system, component:	Clydebank, 3	B₂₂	25 - 80 cm	Yellowish brown (10YR 5/4) heavy clay; common distinct yellowish brown mottles (5 - 15 mm); moderate medium (20 mm) angular blocky structure; smooth-ped fabric; very firm when moist; few roots to 60 cm; some water-worn quartz gravel between 10 and 30 mm; pH 8.5; clear boundary
Topography:	Young marine plain, 1% slope	C_I	80 - 110 cm	Light grey (10YR 7/2) clay loam; common distinct yellowish brown mottles (>15 mm); moderate angular blocky structure; smooth-ped fabric; firm when moist; 3% calcareous nodules (up to 20 mm) increasing to 7% at depth; pH 8.5; gradual boundary
Elevation:	10 m	C₂	110 - 120+ cm	Greyish brown (10YR 5/2) clay loam; few distinct yellowish brown mottles (5 - 15 mm); probably blocky structure; rough-ped fabric; firm when moist; 2% calcareous nodules up to 20 mm; pH 8.5
Drainage:	Poor
Parent material:	Holocene clays, silts, sands and gravels
Vegetation:	Cleared; grassland with Phalaris aquatica and Bromus p.

LABORATORY ANALYSES 969
Horizon	Sample Depth cm	Lab. texture	Particle size distribution					Atterberg limits				1:5 soil water suspension			Clay mineralogy by x-ray diffraction
Horizon	Sample Depth cm	Lab. texture	Gravel %	Coarse sand % f.e.	fine sand % f.e.	Silt % f.e.	Clay % f.e.	liquid limit %	plastic limit %	plasticity index %	linear shrinkage %	pH	EC 25°C uS/cm	Cl- %	Depth cm	Composition %
All	0 - 4	C	8	2	21	13	51					5.7	180	0.015	30 - 60	mica 60; Kaolinite 25; illite 15
Al2	4 - 10	C	5	13	25	14	45					5.9	110	0.003
B21	12 - 20	CL	17	4	30	25	38					6.8	140	0.010
B22	30 - 60	C	11	7	32	13	51	73	20	53	18	8.3	1200	0.16
Cl	90 - 110	C	41	4	38	15	45					9.3	2200	0.28

Horizon	Sample Depth cm	Org. C %	Total N %	1.3C N	Free Fe₂O₃ %	Available		HCl extract		Exchangeable cations
						P ppm	K ppm	P %	K %	Ca	Mg	K	Na	CEC	Ca % of CEC	Mg	K	Na	H
						P ppm	K ppm	P %	K %	Milliequivalents/100g				CEC	Ca % of CEC	Mg	K	Na	H
All	0 - 4	7.7	0.57	18	0.7	29	640	0.039	0.35	4.3	4.5	1.7	1.2	35.6	12	13	5	3	67
Al2	4 - 10	3.0	0.27	14	0.7	11	300	0.021	0.34	2.8	3.2	0.9	1.1	24.8	11	13	4	4	68
B21	12 - 20	1.5	0.14	14	1.1	4	220	0.013	0.39	4.1	6.8	0.7	2.5	22.7	18	30	3	11	38
B22	30 - 60				1.7			0.008	0.58	4.2	11.4	1.0	7.9	28.2	15	40	4	28	13
C	90 - 110				0.4			0.006	0.41	4.8	9.2	0.7	7.7	22.4	22	41	3	34	0

Page top